40377430217 has 2 divisors, whose sum is σ = 40377430218. Its totient is φ = 40377430216.

The previous prime is 40377430193. The next prime is 40377430241. The reversal of 40377430217 is 71203477304.

40377430217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (40377430193) and next prime (40377430241).

It can be written as a sum of positive squares in only one way, i.e., 32059260601 + 8318169616 = 179051^2 + 91204^2 .

It is a cyclic number.

It is not a de Polignac number, because 40377430217 - 2⁶ = 40377430153 is a prime.

It is not a weakly prime, because it can be changed into another prime (40377430277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20188715108 + 20188715109.

It is an arithmetic number, because the mean of its divisors is an integer number (20188715109).

Almost surely, 2^40377430217 is an apocalyptic number.

It is an amenable number.

40377430217 is a deficient number, since it is larger than the sum of its proper divisors (1).

40377430217 is an equidigital number, since it uses as much as digits as its factorization.

40377430217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 38.

The spelling of 40377430217 in words is "forty billion, three hundred seventy-seven million, four hundred thirty thousand, two hundred seventeen".